On Thu, Aug 06, 2015 at 10:18:50PM -0700, Eric Sandeen wrote:
> mkfs.xfs got weird along the way; today it has different outcomes
> depending on the order of option specification:
>
> $ mkfs/mkfs.xfs -n ftype=1 -m crc=0 -dfile,name=fsfile,size=16g
> cannot specify both crc and ftype
> $ mkfs/mkfs.xfs -m crc=0 -n ftype=1 -dfile,name=fsfile,size=16g
> <succeeds>
>
> Somehow the tests got written as being constrained on what options
> are specified - and in what order! - vs actually testing for
> incompatible feature sets.
>
> It's fine to specify both crc & ftype options, as long as it's an
> allowed combination, so just test for the incompatible combination
> (crc=1 and ftype=0) after all options have been processed.
>
> Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Did you test this, Eric?
$ mkfs.xfs /dev/sdc
cannot disable ftype with crcs enabled
Usage: mkfs.xfs
/* blocksize */ [-b log=n|size=num]
.....
> ---
>
> diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
> index 69d61c7..9042796 100644
> --- a/mkfs/xfs_mkfs.c
> +++ b/mkfs/xfs_mkfs.c
> @@ -1477,11 +1477,6 @@ main(
> if (c < 0 || c > 1)
> illegal(value, "m crc");
> crcs_enabled = c;
> - if (nftype && crcs_enabled) {
> - fprintf(stderr,
> -_("cannot specify both crc and ftype\n"));
> - usage();
> - }
> break;
> case M_FINOBT:
> if (!value || *value == '\0')
> @@ -1555,11 +1550,6 @@ _("cannot specify both crc and ftype\n"));
> if (nftype)
> respec('n', nopts, N_FTYPE);
> dirftype = atoi(value);
> - if (crcs_enabled) {
> - fprintf(stderr,
> -_("cannot specify both crc and ftype\n"));
> - usage();
> - }
> nftype = 1;
> break;
> default:
> @@ -1714,6 +1704,10 @@ _("Minimum block size for CRC enabled filesystems is %d bytes.\n"),
> XFS_MIN_CRC_BLOCKSIZE);
> usage();
> }
> + if (crcs_enabled && !dirftype) {
> + fprintf(stderr, _("cannot disable ftype with crcs enabled\n"));
> + usage();
> + }
nftype = dirftype = 0; /* inode type information in the dir */
So we enable crcs by default and do not enable dirftype/nftype by
default, and so by default mkfs now fails. I'll fix it to always
default to ftype=1 for both v4 and v5 filesystems as there is no go
reason not to enable it.
Cheers,
Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx
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